BB7 and Paul levers here and they work great 160mm rotors front and rear and they stop my 13 stone bulk quite happily.
No maintenance since I got the bike a year and a bit ago from Tim at sideways, (well I've wound the pads in a couple of notches) just ace continous perfect consistent braking.
Set up is everything get some body who is actually good with bikes to do it for you, my best efforts have ben rubbish compared to Tim.
I store my bike hung from the rear dropouts a lot of the time and both avid, shimano and hope Hydro's would need bleeding after a six weeks of storage like this despite it being completely illogical.
BB7's just work for me, my riding and my bike storage.